The cited link is full of case studies of how cities across America reduced the average speed along arterials, replaced turn lanes with pedestrian medians, created mid block pedestrian crossings, created bike lanes.

Commercial property owners donated increased Right Of Way to some of the projects.

And traffic accidents were cut in half, retail activity increased 40% more than growth in the city as a whole, pedestrian activity exploded while pedestrian/auto accident incidents did not increase.

Let's do this, Phoenix!